Dennis, a mischievous boy with a knack for getting into trouble, causes chaos in his neighborhood, especially for his grumpy neighbor Mr. Wilson. Despite his mischief, Dennis's innocence and good intentions shine through, making him a lovable troublemaker.

A Dennis the Menace Christmas follows the mischievous adventures of Dennis Mitchell, a young boy who is always causing trouble in his neighborhood. As Christmas approaches, Dennis finds himself on Santa's naughty list and must do everything he can to redeem himself. With the help of his friends and a little bit of Christmas magic, Dennis learns the true meaning of the holiday season.

Dennis Mitchell, the mischievous troublemaker, causes chaos as he spends his birthday and goes on a family vacation with his parents, Mr. and Mrs. Wilson.